Magnetic doorstop



May 3, 1949. J. o. GALEY MAGNETIC DOORSTOP Filed Jilly 14, 1947 James 0. Ga/ey I nventor fia'tented May 3, 1 949 2,468,969. mrltiifii'rio nooas'ror dames fi). yGaley, Nashville, Tenn.

" ,nfiplie'atimriluiy '14, iang serisrmof 7.603122 Glaims.

1 I ihvention rlat's to new and-*u'Se'fuF im- ,provetrrnts ifidoofstops and" moreparticula'rly to'magneticrdoorfstops.

"-"Ihe primarybbject'of the present invention is to provide a door stop including' means for =nor l mally retaining-said stop-holdingmagnet in a raised position above a floor surface.

A still further aim ofthepresent invention is to provide 'a magnetic-door stop that simple '*and practical'in"constructiorfi'strong and 'fiicient inuse, relatively-inexpensiveto *manufacture' and otherwise we'll adap-tcd for' the purposes for which the same is intended.

. Otherobjects and advantages reside inthe-detans or construction"and'pperition as m'ore *fully 5 hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a fragmentary front elevational view of a door showing the present invention applied thereto;

Figure 2 is a front elevational View of the present invention showing the stop supporting magnet in a raised position and with parts broken away and shown on section;

Figure 3 is a front elevational view of the present invention showing the stop supporting magnet in a lowered position, and with parts of the stop element broken away and shown in section;

Figure 4 is a side elevational view of Figure 3 and with parts broken away and shown on sec tion; and

Figure 5 is a front elevational view of the base member used in conjunction with the presen invention.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral l'fl represents a substantially rectangular base plate or member that is removably secured by fastening members 12 to the lower portion of a door or the like [4.

Fixedly secured to the lower portion of the '2 7 "15 1113176 in is :apin i 6 -having-one terminal portipn projectingroutwardly from theplateto enga e a fiongitudinal :vertically disposedslot Seprovided in a 'l'owerabar magnet-p2d- Alsubstantially recl r tangular"preferably rubberized a stop member 22 issfrictionally carried by the lowerlend'of the bar emagneteZll.

To guide the: longitudinal cmov-ement of 'nthe Hbar magnet'Zfl relative to thetbasaplate Ll] there provided" a -isubstantially channelsshaped acket-+2 4 fixedly secured to: l the ib aser. plate r1 1oosely surroundingsaid: bar magnet.

i R'emowablyi mountedat the;*uppeneportionr of a late .l dasis a. swivel member-comprisingaobolt re the likeifZfi i having eitsr-headi recessed inwthe lrearsface of the plateand the: {externally-threaded i -:portion.. ofwthe 'bolt projects" outwardly from:;the niforwardface of the base plateto engageably treceive" 'an internally threaded a'perture =28 r-provided 1,111 an upperabar magnet 30.

Recessed in -a s1ot 32' provided: in the base plate a fiat springtt havingitslower terminaleporon removably se'cureduby a l-fastener B'BktQ- the "irhaset plate. At gtha opposite, free terminalmpor- 2 tetiori'cof-sthe spring is-suitablwsecured 'end'ete'nt or w-iithetilikei Methat engages-' a -r'ecessi4ilrprovided sin the upper end of the upper magnet for normally holding the south pole 42 of the upper magnet above the north pole 44 of the lower magnet, as shown in Figure 2 of the drawings, and thereby maintaining the lower magnet in a raised position. Another recess or detent is also provided in the opposite end of the upper magnet to engage detent 38 for holding the north pole 41 of the upper magnet adjacent the north pole of the lower magnet and thereby repel the lower magnet to a lowered position as shown in Figures 3 and 4.

Removably secured by fasteners or the like 46 to the upper magnet 30 is a lever 48 for rotating the upper magnet with the bolt 26 as a pivot.

In practical use of the device, when the upper magnet is in a normal position, the south pole 42 of the upper magnet is positioned above the north pole 44 of the lower magnet and the lower magnet is in a raised position.

When the upper magnet is inverted, by use of the lever 30, so that the north pole 4! of the upper magnet opposes the north pole of the lower magnet, the lower magnet is no longer attracted to the upper magnet and slides downwardly so that the stop member will bear on the floor surface beneath the door.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the de- 3 vice will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A magnetic door stop comprising a base member removably secured to a door, a lower gravity actuated magnet slidably mounted on said base member, a resilient member engaging the lower end of said lower magnet, an upper magnet pivotally mounted on said base member, said upper magnet having first and second poles, said first pole being attracted to the upper end of said lower magnet to retain the latter in a raised position, means for rotating said upper magnet, said upper magnet having a pair of recesses in its inner face, a spring arm secured to the plate for holding the upper magnet in a selected rotated position with one pole thereof disposed adjacent the upper end of said lower magnet, and a detent carried by said spring arm received in a selected one of said recesses.

2. A magnetic door stop comprising an anchor plate removably secured to a door, a guide carried by said anchor plate, a lower magnet slidably carried by said guide and having upper and lower poles, means carried by said plate for limiting the sliding movement of said lower magnet, a floor engaging member carried by said lower magnet, an upper magnet rotatably mounted on said anchor plate and having first and second poles, said first pole being unlike the upper pole of said lower magnet and said second pole being like the upper pole of said lower magnet, means for rotating said upper magnet to place a selected pole thereof adjacent the upper pole of said lower magnet, said upper magnet having a pair of recesses in its inner face, a spring arm fixed to said rotated position with a selected pole thereof disposed adjacent the upper pole of said lower magnet, and a detent carried by said arm for reception in a selected one of said recesses.

3. The combination of claim 2 wherein said means carried by said plate for limiting sliding movement of said lower magnet includes a stop pin fixed to said plate, said lower magnet having a longitudinal slot slidably receiving said pin.

4. A magnetic door stop comprising an anchor plate removably secured to a door, a guide carried by said anchor plate, a lower magnet slidably carried by said guide and having upper and lower poles, means carried by said plate for limiting the sliding movement of said lower magnet, a floor engaging member carried by said lower magnet, an upper magnet rotatably mounted on said anchor plate and having first and second poles, said first pole being unlike the upper pole of said lower magnet and said second pole being like the upper pole of said lower magnet, means for rotating said upper magnet to place a selected pole thereof adjacent the upper pole of said lower magnet, a spring arm recessed in said anchor plate and having one end fixed to said anchor plate, a detent fixed to the free end of said spring arm, said upper magnet having a pair of recesses in its inner face adjacent the ends thereof for selectively receiving the detent to retain a selected pole of said upper magnet disposed adjacent the upper pole of said lower magnet.

JAMES O. GALEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 243,009 Topham et a1 June 14, 1881 398,763 Baker Feb. 26, 1889 777,408 Fletcher Dec. 13, 1904 FOREIGN PATENTS Number Country Date 145,325 Germany Dec. 30, 1902 

